Rubber threshold ramp



FIG. 1 shows a top perspective view of a rubber threshold ramp showing my new design;

FIG. 2 shows a bottom perspective view thereof;

FIG. 3 shows a rear elevational view thereof;

FIG. 4 shows a right side elevational view thereof;

FIG. 5 shows a bottom plan view thereof;

FIG. 6 shows a front elevational view thereof;

FIG. 7 shows a top plan view thereof; and,

FIG. 8 shows a left side elevational view thereof. 

CLAIM The ornamental design for a rubber threshold ramp, as shown and described. 